As far as I’m aware no one has the blue version at the moment but pretty much anyone who is selling the other colors is offering it up for preorder. I personally do not think that we will be seeing it until early December. This is based on various dates that I have seen on retailers websites and intuition. You can preorder from the usual suspects:
oyyy
dabs
ebuyer (got mine here)
amazon
saveonsamsung
currys
dixons
pc world
cclonline
overclockers
Or if you do not want to order online and live near London, head down Tottenham Court road where you can pick one up in person from a local shop.
Also in my hunt for one I contacted John Lewis who said they should have stock this week, 30 in Black at the Oxford store in particular but they wont necessarily be offered on the website. It doesn’t sound like they are getting much but its another viable option.
Bottom line though: No blue just yet. Good Luck!
Regards,
ashesfall